－How beautiful Lucy is! She looks smart _______ red.

－Yes, the red clothes are very wonderful _______ her.

因式分解：x²－4(x－1)               

方程有两个不等实根，则k的取值范围是（  ）

阅读理解
    Growing up in Puerto Rico, our family was no different from so many others. My parents got married after my father came back when the war ended. Both of my parents were struggling with the hard economic realities of the time. But somehow, they found time to cherish those cultural values that shaped our everyday life.
    In our daily life, we celebrated together with our friends or family members every birthday, every graduation, and all holidays with music and dancing, and typical foods. When we visited our family in the countryside—a trip that took about two hours in a car, with five children fighting as to who would get a window or the front seat —we would break into song, and somehow the trip would turn into one full of happiness and fun. We would sing not only interesting children's songs but also beautiful love songs — songs about the love of our country though we didn't understand the meaning of the words many times.
    I came to Philadelphia for the first time in 1973 to do a residency(实习) in family medicine. I remember the many hours of work. I was facing issues of life and death and suffering the clearly social unfairness and issues of poverty and race. These were all worsened by my feeling of cultural differences.
    An important turning point in my life happened one Saturday night when I attended a concert of Puerto Rico singer and composer Antonio Caban Vale. The music showed my familiar rhythms, and the words spoke to my heart. I had found a space to express, celebrate, and share my culture in Philadelphia. Therefore, I believe diversity is seen as an advantage and not as a disadvantage. As a Puerto Rican, I am a mixture of races and I believe in my strength because of this.

科学技术是第一生产力，它改变了世界的面貌，也改变了人们的生活。阅读材料，回答下列问题。
材料一   1851年英国举办“万国工业博览会”，有10个国家接受邀请，此为世界博览会的开始，后来逐步发展成为世界性盛会，为了显示 国力，英国政府耗用4000多吨铁和400多吨玻璃，建造了一座长逾1800英尺、高逾100英尺的“水晶宫”。此次博览会令人瞩目的展品当属引擎、印刷机和纺织机器等产品。在19世纪，原材料、机械、工业制品及雕塑作品成为世博会的主要展品，蒸汽机、混凝土、铝制品、橡胶、缝纫机、印刷机、火车、电动马达等相继成为展会上的新宠。
                                                                                                                                    ——摘编自霍勒死• 格里利《水晶宫及其经验》
（1）根据材料一并结合所学知识，简要说明英国“万国工业博览会”举办的背景及其意义。
材料二  为了增加发电量，人们首先在既有的动力机——蒸汽机上下功夫。蒸汽机体积大而笨重，运转缓慢，不能满足要求，人们不得不进行新的探索。不久，各种燃料的内燃机相继问世。内燃机体积小，效率高。它的发明，不仅解决了发电量的问题，而且被应用到交通运输业上，使其发生了巨大的变化。
（2）请结合所学知识，举两例内燃机“被应用到交通运输业上”的重要发明。这些重要发明给人们的生活带来了什么影响？
材料三   一些工业发展的城市和工矿区人口密集、物流量大，煤的燃烧量急剧增加，大气污染的环境问题不断发生。如1873、1880、1882、1891、1892年，英国伦敦多次发生可怕的有毒烟雾事件。
                                                                                                                               ——刘少康编著《环境与环境保护导论》
（3）材料三反映了英国伦敦出现了什么问题？
（4）根据以上材料和所学知识，你认为在发展经济时应该注意些什么？